unreal-engine-mcp

MCP server for Unreal Engine 5 with 17 tools for game development automation.

stdio v0.5.18

Connection Configuration

Add this to your AI agent's MCP config file to connect.

Run in your terminal:

claude mcp add io.github.chir24--unreal-engine-mcp -- npx

Server Details

Transport

stdio

Authentication

None

Version

v0.5.18

Server Name

io.github.ChiR24/unreal-engine-mcp

Last Updated

Feb 21, 2026

Get Started

How to install and connect this MCP server.

Required Configuration

Environment variables you must provide when running this server.

Variable	Description	Required
`LOG_LEVEL`	Logging level: debug, info, warn, error (default: info)	Optional
`MCP_ROUTE_STDOUT_LOGS`	Route standard output to standard error to avoid protocol corruption (default: true)	Optional
`UE_PROJECT_PATH`	Absolute path to your Unreal .uproject file	Optional
`UE_EDITOR_EXE`	Path to UnrealEditor-Cmd.exe (optional)	Optional
`UE_SCREENSHOT_DIR`	Directory to save screenshots (optional)	Optional
`MCP_AUTOMATION_PORT`	Automation bridge WebSocket port (default: 8091)	Optional
`MCP_AUTOMATION_HOST`	Automation bridge WebSocket host (default: 127.0.0.1). Set to 0.0.0.0 for LAN access (requires MCP_AUTOMATION_ALLOW_NON_LOOPBACK=true)	Optional
`MCP_AUTOMATION_ALLOW_NON_LOOPBACK`	SECURITY: Allow binding to non-loopback addresses (e.g., 0.0.0.0) for LAN access. Only enable if you understand the security implications. (default: false)	Optional
`MCP_AUTOMATION_CLIENT_MODE`	Run as client connecting to UE (false) or server listening for UE (true) (default: false)	Optional
`MCP_AUTOMATION_USE_TLS`	Use wss:// for the automation bridge client connection (default: false)	Optional
`MCP_CONNECTION_TIMEOUT_MS`	Connection timeout in milliseconds (default: 5000)	Optional
`MCP_REQUEST_TIMEOUT_MS`	Request timeout in milliseconds (default: 30000)	Optional
`MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTE`	Max inbound automation bridge messages per minute before disconnect (default: 600)	Optional
`MCP_AUTOMATION_MAX_AUTOMATION_REQUESTS_PER_MINUTE`	Max inbound automation request messages per minute before disconnect (default: 120)	Optional

unreal-engine-mcp

Connection Configuration

Server Details

Get Started

npm / npx

Required Configuration